Car truck



E. W. WEBB'.

CAR TRUCK.

APPLmATsoN FILED Nov. l2. |921.

Patented Feb. 21, 1922.

2 SHEETS-SHEET I.

ZWQW QINM.

E. W. WEBB.

CAR TRUCK.

APPLxcAIloN man Nov. x2. 192|.

1,407,452. Patented Feb. 2l, 1922.

2 SHEETS-SHEET 2.

usaran sra'ras EDWIN W. WEBB, or CHICAGO, ILLINOIS, risers-NOR ToSTANDARD Cnn Tanon COMPANY, or CHICAGO, ILLINOIS, A CORPORATION or NEW.Inasnr CAR TRUCK.

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Specicaton of Letters Patent.

Patented Feb. 2i, ity/*2.

Application led November 12, 1921. Serial No. 514,586.

To all whom it may concern:

Bc it known that I, EDWIN lV. lln, a citizen of the United States,residing at Chi# cago, in the county of Cool; and State of Illinois,have invented certain new and useful Improvements in Car Trucks; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same. Y

This inventiton relates to a car truck, and particularly, to a trucksuch as used for railway cars.

' Considerable trouble has been experienced in railway trucks, due tothe excessive wear of the truclr bolster and the side frame bolstercolumns, especially on the type of the truck in which the bolster has avertical spring action. It is desirable, therefore, to have the greatestpossible area of wearing surface between the bolster and bolsterVcolumns.

t is an object of this invention, therefore, to provide a truckstructure in which a large area of wearing surface is obtained,particularly, in connection with the type of the side frame now widelyused, which has the top or compression member of inverted U-shape incross section.

It is a further object of the invention to provide this additionalwearing surface by extensions projecting from the top and bottom sidesof the bolster' andto so arrange these projections that they will notinterfere with thc movement of the bolster kor other parts of the truck.lThese and other objects and advantagcsof the invention will more fullyappear from the following description made in connection with theaccompanying drawings in which like reference characters refer to thesame parts throughout thodiiiereut views, and in which Y.

Fig. l is a vertical centralsection through one end of the truck; v

Fig. 2 is a vertical section taken on the line 2,-2 of Fig. 1, butshowing the side frame in end elevation; Y

`Fig. 3 is a section taken on the line 3 -3 of Fig. 2; Y

Fig. at is a bottom plan view of one end of the bolster; and

Fig. 5 is a partial sec-tion similar to that shown in Fig. 3, butshowing a modification. i

Referring to the drawings, the central part of the side frame l is shownhaving the holster columns ll. in the construction of the present truck,these bolster columns are preferably made somewhat wider than usual, theincreased width over the other parts of the side frame being clearlyindicated in Fig. 3. VThe side frame has its top portion or compressionmember of inverted tl-shape in cross section, as shown at l. This typeof cast steel side frame is now widely used. The bolster 2 extends, asusual, between the bolster columns and is provided at its outer end withthe projecting lugs 2l forming guides or stops to limit the endwise movement thereof. The bolster is formed on its bottom surface with recessesto receive and retain the roller bearings 3 which are, in turn,supported upon the usual spring cap or plated which is, likewise,provided with roller receiving' surfaces and intermediate ribs, asclearly shown in 3. The plate l is supported upon a plurality of coiledsprings 5 which are, as usual, seated upon the bottom part of the sideframe or the spring plank or tie member extendingY across the same. 4

The bolster 2 is shown as of box section, the sides of which form thewearing surface for contacting with the bolster columns, and inaccordance with the present invention, an upwardly projecting' extension2IJ is provided at each sido of the bolster which is shown connected tothe top thereof by a central reinforcing rib. The extension 2h of suchwidth longitudinally of the bolster as to be received in tho recess ofthe U-shaped section l" of the side frame. When the truck is beingassembled therefore, this extension will be received in said recess,thus giving ample room for tho assembling operation. Normally, theextension 2*' will be located so that its top edge will pass below thebottom of the U-shaped section so that there willbe no interference withthe usual endwise inovement of the bolster. In addition to the upwardlyprojecting extension, the bolster is also provided at each side, with adownwardly projecting extension 2c forming a continuation of its wearingsurface. As shown in Fig. 2, the spring cap t has upwardly projectingflanges ia at its sides forming the retaining means for the rollers andthese flanges are arranged to be disposed inside of the extensions 2c.The cap or plate 4, however, is, at its end portion, provided CTIembrace the sides of the bolster colnn'insand Vlimit the movement of theplaterelatively thereto.Y The guide lugs are sufliciently spaced toperinitjabout one and one-eighth inches of lateral movement in eitherdirection for the average sizetruelt.V lt Vwill be noted that theextension 2c Apass down Vbetween the guide .lugs 1lb and said extensionsdo not interfere in any way with the movement-s of the pla'te or cap l.

lf the bolster columns are not made with extra width, as shown in'lliigsqi and 3, the extensions 2"" can still be providedV on the ends ofthe bolster and the springl plate constructed-,hs shown at 6 in Fig. o.'ln this construction, the lugs Gix corresponding to the lugs 1l" in Fig.3, are formed to extend or` project inwardly to contact with the sidesof the bolster column, thus forming'a recess Gb in which the downwardextension 2C of the bolster is d`isposed. j

.From the above description itis seen that applicant' has provided atruck with a large Vextent of wearing surface between the bolster andbolster columns and this additional wearing vsurface is provided withoutintertering in any way with the desired Inoven'ients of thetruclr parts;frs stated, the structure used has the popular design of cast steeltruck side frame having the inverted U section at the top. Theadditional wearing surface provided also does not in any way interferewith the assembling operation. A truc'lr constructed according to thepresent invention will have a much longer life than one having thesmaller wearing surfaces.

It will, of course, be understood that various changes may be made inthe form, details and proportions of the parts without departingfrom thescope of applicants invention, which, generally stated, consists in thematter shown and describedand set forth in Vthe appended claims.

VV'hat is claimed isf l. VA car truck comprising a side frame having itscompression member of inverted U shape in cross section, and havingbolster columns, a bolster having a wearing surface extensionV projectedupwardly at the side thereof and adapted to be received in saidlil-shaped section of the side Vframe wl en the truck is assembled.

2,. The structure set forth' in claim 1said' co-operating therewith,said latter surfaces comprising downwardly projecting exten- Y sionsv'at each .side of said bolster projecting below the body of the bolsterbetween the bolster columns.` j

il car truclr comprising a siderframe having bolster columns, a bolstermovable therebetween and Y having estensione disposedbetween the bolstercolumns and projecting below the line of the main bodyfof thebolsteradjacent said columns, said projections forming extended wearingsurfaces adapted to contact with'tlie wearing surfaces'V of the bolstercolumns, a spring supported roller carrying plate for supporting saidbolster,the sides of said plate being disposed between said extensionsand below said line.

6. il car truck having bolster columns provided with` guiding andwearing surfaces, and a bolster ofbox section Vhaving' wearing surfacesco-operating therewithand comprising' ai downwardly extending projectionat I each side of said bolster which projects below the bottom of saidbox4 section.

7. A car truck comprising a side frame" hai-'ing bolster columns,abolster vertically and longitudinally movable Y therebetween havingwearing surfaces at the sides thereof comprising downwardly projectingextensions disposed between the bolster columns and extendingV below themain side walls of the bolster body in the cross plane ofsaid columns, aplurality of springs supported on the side frame, a cap platesupportedonsaid springs, and a plurality of rollers supported en said cap plate forsupporting said bolster, said cap plate having upwardly extendingflanges at its side portions for retaining the rollers, said flangesbeing disposed between said downwardly projecting extensions ofV thebolster whereby endwise movement of the bolster is permitted.

8l. A car truck comprising a side frame having its upper member ofinverted U shape `in cross section and having bolster columns, a bolsmrvertically and longitudinally movable between said columns havingwearing surfaces at its sides comprising upwardly and downwardlyprojecting extensions, aspring cap carryingrollers for supporting saidbolster and having guide lugs at its ends embracing the sides of saidbolster columns, the upwardly projectingV extensions of the bolsterbeing adapted-to enter said lli-.shaped section when the truck isassembled and the downwardly projecting extensions'of the bolster beingadapted to pass between said guide lugs on the spring cap".V

nnwin w. wenn.

ln testimony whereofl affix mysignature.

